Building element



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H. KOLLRUNNR BUILDING 'ELEMENT Fuga Jan. 2 2 1924 Eme/230?? Patented Non. Yl, Q@

'arent HEINRICH KOLLBB'UNNER, 0F RAPPERSWIL,-SWITZERLAND.

BUILDNG' ELEMENT.

Application led January 22,1924. Seria No. 687,873.

T all whom dt may concern.' l i Be it known that 1,. HEINRICH KOLLBRUN- t Nrn, a citizen of the Republic of Switzerasbestos, stones ground to powder, animal or vegetable glue or a similar substance, and, if desired, a colouring matter, which after binding or setting and drying; is pressed, impregnated and lsubjected to an intense heat, and the product thus obtained is a building element which maintains its form, which is heat resisting and durable, andpossesses a high mechanical strength so that itis very suitable for building and constructional purposes. Y

The method according to the present invention consists in forming a mixture of paper mass, asbestos, stones in powder form, animal or vegetable glue, or a similar substance and a colouring matter, if required,

permitting said mixture to bind and subjecting it thereafter to a pressure to give it a desired shape: then the element is impregnated and subjected to the action of a high temperature for eeeting a thorough drying. lf the element is madeiiiftileor slab shape to one side of suchtile'ia polishing medium may be applied s o that the elements may be utilized as coverings for walls`,and floors in the manner of Dutch tiles.

Preferably the slabs are provided'with a reinforcement arranged substantially parallel to the surface of the slabs, the rein-M forcement being inserted into the card-board slab before the latter is dry so that it is well embedded innthe material when' the latter has set; the strength of such slags is materially increased and a distortion of the slabs owing to the influence ofthe dampiiess or of mechanical stresses is avoided.

The slabs, sheets and the like made of i compressed cardboard according' to the invention may, owing to ftheir exceedingly high mechanical strength in vcomparison to their weight and particularly owing to their i heat resisting qualities, their low heat conductivity and their sound damping eeots, be successfully utilized for building interior partition walls and panellings for. ceilings and walls in buildings, as well as for making furniture, packing casings, carriage bodies, panellings of railway cars, trunks and other articles. f

4Owing to the high electric resistance of the compressed card-board combined with the high mechanical strength the building element may advantageously .be used as elenient for making insulations of any type on machines, transformers and switch boards iii thesliape of slabs, plates, tubes as well as in any other shape formed in die-presses.

The impregnation may be e'ected by treating the material in vacuum with het oil `and drying it thereafter 'thoroughly by the applicationof artificial heat whereby a very hard product is 'obtained which is not irifluenced by dampness and which may be used. as building element in damp rooms, for instance in bath rooms.

,The building' elements of compressed card-board may be made in the sha e of plates, slabs and the like in any desire colour; by means of dies or roller presses any desired ornamentation may be applied to the slabs; in this manner, for instance, stuccolike reliefs for panel work, imitations of carvings in wood, ornamentation similar to thatin Dutch tiles, perfect imitations of veined wood for veneersk and of articial leather may be obtained.

Constructional examples of the subject matter of the present invention are illus -trated on 'the accompanying drawings in which Fig. 'll shows in a front view a slab made of compressed card-board,

Fig. 2 is a section along line H--l in Fig. 1,j

Fig. 3 shows partly in section a reinforced slab made of compressed card-board,

- Fig. tis a section along line IV-lV in Fig. 3.A

When making the building element the compressed card-board is manufactured in the first stage like ordinary card-board from a mixture Iof raw paper mass and asbestos.

To this miXturestone in powder form isl added as well as animal or vegetable glue and a colouring matter. Thereby a mass is formedwhich is able to set and which is pressed afterA it is dry, in applying the pres lil@ lll

sure the desired ornamentations or patterns are ap lied as well b means of dies or rollers. he surface oty the compressed cardboard may receive any treatment, for instance a coating of a polishing matter may be applied. ln order to prevent that dampness has any influence on the card-board element .and toharden it the latter after having been pressed is impregnated in a vacuum with hot oil` and isy thereafter thoroughly dried by applying an artificial heat having a temperature of approximately 200, the hardened. slab has an increased re-v sistanoe a ainst deformations.

Fig. l s ows in a :front view a slab made et compressed card-'board provided with an ornamentation impressed into it, which slab may be utilized as Apart oi a furniture, tiles iter' covering walls or the like, Fig. 2' illus? trates a cross-section through the slab.

ln `Eig. 3 a portion of a compressed cardboard slab l reinforced by the insertion of a wine netting 2 is shown. The reinforcement is inserted in between two fresh layers ofi compressed card-board which are still somewhat damp and the whole is subjected to a pressure., When the material has completely set and is dry the slab is again sub ject/ed to a heavy pressure, so that the reinorcement netting is well embedded in the set masspwhereby a slab is obtained which has a great strength and a resisting power against any deformation.,v The 'reinforcement netting which is substantially parallel to the surface or the slab may be arranged in the middle olf the cross-section as may be seen in Fig. Il, or it may be arranged nearer to any or the surfaces.

lill

The reinforced building element as well as the building element without the reinforcement may be used in many ways, a particularly extended utilization presents itself in the electro-technical industry. lts suitability for the latter hind of work results from the tact that a slab of a thiclmess of npronimat/ely i5 mm. (gf) has a disruptive strength ci? 50000 volts.

ll claim:

l.. The method ci manufacturing building elements oil compressed card-board, which consists in. forming a mixture ot paper mass, asbestos, stones in powder form and animal or vegetable glue, spreading said mixture out into a layer and'permitting it to set and dry, subjecting the material to a pressure, impregnating it and subjecting it to the action of heat tor thoroughly drying it f 2. The method of manufacturing"building elements voit compressed, card-board, which consists in forming a mixture oi paper mass, asbestos, stones in powder form and animal or vegetable glue, spreading said mixture out into a layer and permitting it to set and dry, subjecting the material to a yand subjecting the composition toa pressure, permitting it to dry and subjecting it thereafter to a heavy pressure to embed the reinforcement thoroughly in the material.

d. A method of manufacturing building elements oit compressed card-board, which consists in forming a mixture of paper mass, asbestos, stones in powder form and animal or Vegetable glue, spreading said mixture out into a layer and permitting it to set and dry, subjectingthe material to a pressure, impregnating it in vacuum by hot oil, and sub'ecting the impregnated material to the' tion of heat for thoroughly drying it.

5. A building element of compressed card-board, which consists of a mixture ot paper mass, asbestos, stones ground to powder, glue, which after setting is pressed, impregnated and artificially dried, whereby the element maintains its term, resists heat and damp'ness and possesses a high mechanical stren h,

, 6. A uilding element out compressed card-board, which consists ot a mixture of paper mass, asbestos, stones ground topowA` der, glue formed in slabs, which alter seti ting are pressed, impregnated and, articially dried, whereby the slabs maintain their form, resist heat and dampness possess a high mechanical strength.

7. A buiiding element' oiicompressed card-board which consists ol? a mixture of `paper mass, asbestos, stones ground to powder, glue formed in layers, and having a reintorcement inserted between two layers to form 'a slab, the slabs are pressed after setting, impregnated 'and artihciall dried, whereby the slabs maintain their erm, re*- sist heat and dampnessand possess a high mechanical strength.

8. A building element of vcompressed card-board, which consists oi a mixture oi2 paper mass, asbestos, stones ground to powder, glue, termed in slabs which aiter'setting are pressed and provided with an impressed ornamentation, impregnated and arlticially dried, whereby the slabsmaintain their forni, resist heat and dampfness and possess a high mechanical strength.

ln testimony whereoi'll amr my sii, ature,

HEINRICH KLLBRUN 

